A woman who repeatedly beat a 7-year-old girl and whose verbal abuse was described as “demented and sadistic” was found guilty of aggravated child abuse Wednesday in St. Johns County.

Medical experts testified the child’s injuries were so severe that they were more consistent with damage received in a car crash, according to the State Attorney’s Office.

Rosemarie Dina Panchoo, 32, told deputies that the child under her care hit her head on a bookshelf while having a seizure in April 2012. However, the child’s injuries consisted of bruises on her face, lips, arms and torso — some that appeared to be in the shape of fingers, a Sheriff’s Office report said.

The girl was put in intensive care, and a medical evaluator determined the injuries constituted “life-threatening physical abuse.”

Panchoo will be sentenced in the coming months and faces up to 30 years.